Final answer:
The sensitivity of most modern indirect digital imaging systems matches that of computed radiography (CR). These systems use phosphor plates in a cassette-based system that is scanned to form a digital image, and ongoing improvements aim to enhance efficiency and reduce radiation exposure.
Step-by-step explanation:
The sensitivity of most modern indirect digital imaging systems is about the same as computed radiography (CR). Unlike direct digital radiography (DDR), which captures images directly onto a digital detector, computed radiography uses a cassette-based system that stores X-ray images on phosphor plates. After exposure, these plates are scanned by a laser, and the emitted light is captured to form a digital image. Modern indirect digital systems have worked towards matching the sensitivity of CR to ensure efficient diagnostic practices.
CR's sensitivity makes it suitable for diagnostic purposes, offering a balance between image quality and exposure levels. However, in comparison to other imaging modalities such as magnetic resonance imaging (MRI) or ultrasound, CR involves ionizing radiation. Each imaging technique, like MRI, CT, PET, and SPECT, has its unique advantages and is chosen based on the clinical scenario.
Improvements in photon detector technology continue to enhance the sensitivity and efficiency of these imaging systems. Improved sensitivity in detectors means fewer photons are needed to produce an image, potentially reducing the dose of radiation patients receive during imaging procedures.